2 doctors weighed in:

I am 20 weeks pregnant as of 20 february 2013, when did u conceive?.

2 doctors weighed in
Dr. Shari Jackson
Radiology
1 doctor agrees

In brief: Estimate

If you are 20 weeks 0 days as of today, your estimated date of conception is 10/17/2012.
This assumes a regular 28 day cycle and ovulation on day 14.

In brief: Estimate

If you are 20 weeks 0 days as of today, your estimated date of conception is 10/17/2012.
This assumes a regular 28 day cycle and ovulation on day 14.
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